The Python ecosystem has compensated with tools that make crunching numbers at scale in Python both fast and convenient. NumPy is one of the most common Python tools developers and data scientists ...

Numbers provide literal or scalar storage and direct access. A number is also an immutable type, meaning that changing or updating its value results in a newly allocated object. This activity is, of ...

so he decided to write an arithmetic expression parser in Python. It came out in about 100 lines of code. Interpreting math expressions is one of those things that seems simple until you get into it.